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Segment information - Balance sheet information (Details) - ARS ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Operating segments |  |  |
PP&E, net | $ 28,538 | $ 23,165 | $ 17,963
Intangible assets, net | 7,098 | 7,592 | 7,659
Purchases | 9,905 | 9,632 | 6,396
Capital expenditures on intangible assets (b) | 1,238 | 1,754 | 3,704
Total capital expenditures in PP&E and intangible assets (a)+ (b) | 11,143 | 11,386 | 10,100
Total additions on PP&E and intangible assets | 12,576 | 11,860 | 11,162
Net financial asset (debt) | (3,260) | (5,892) | (2,277)
Eliminations |  |  |
Operating segments |  |  |
Intangible assets, net | (1) | (1) | (1)
Fixed services | Operating segment |  |  |
Operating segments |  |  |
PP&E, net | 15,039 | 11,468 | 9,280
Intangible assets, net | 406 | 429 | 443
Purchases | 5,254 | 3,820 | 2,846
Capital expenditures on intangible assets (b) | 153 | 197 | 233
Total capital expenditures in PP&E and intangible assets (a)+ (b) | 5,407 | 4,017 | 3,079
Total additions on PP&E and intangible assets | 6,886 | 4,525 | 3,514
Mobile Services | Operating segment |  |  |
Operating segments |  |  |
PP&E, net | 13,499 | 11,697 | 8,683
Intangible assets, net | 6,693 | 7,164 | 7,217
Purchases | 4,651 | 5,812 | 3,550
Capital expenditures on intangible assets (b) | 1,085 | 1,557 | 3,471
Total capital expenditures in PP&E and intangible assets (a)+ (b) | 5,736 | 7,369 | 7,021
Total additions on PP&E and intangible assets | 5,690 | 7,335 | 7,648
Personal Mobile Services | Operating segment |  |  |
Operating segments |  |  |
PP&E, net | 10,901 | 9,541 | 6,899
Intangible assets, net | 6,482 | 7,086 | 7,131
Purchases | 4,161 | 5,249 | 3,157
Capital expenditures on intangible assets (b) | 1,032 | 1,481 | 3,395
Total capital expenditures in PP&E and intangible assets (a)+ (b) | 5,193 | 6,730 | 6,552
Total additions on PP&E and intangible assets | 5,173 | 6,708 | 7,158
Nucleo Mobile Services | Operating segment |  |  |
Operating segments |  |  |
PP&E, net | 2,598 | 2,156 | 1,784
Intangible assets, net | 211 | 78 | 86
Purchases | 490 | 563 | 393
Capital expenditures on intangible assets (b) | 53 | 76 | 76
Total capital expenditures in PP&E and intangible assets (a)+ (b) | 543 | 639 | 469
Total additions on PP&E and intangible assets | $ 517 | $ 627 | $ 490

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